“When our people are cutting them, they gotta use sanitary gloves and we use the same cutting board just for the lemons and limes, just for fruits for the bar,” he said.

And you won’t find any ketchup bottles on these tables. They can get covered with hand prints and germs, so Ansari’s doesn’t use them.

“Everybody handling that. You don’t want that. We use the pump. They pump into the portion cup. It’s easy. No hands on it,” he said.

In the bathroom, undersides of soap dispensers can get filthy, so touch-free dispensers are better. And when you’re done washing, use the paper towel to avoid touching the door handle.

“I think there’s probably a healthy paranoia that we all should have,” said Dr. Jeff Bender of the University of Minnesota.

Airplane bathrooms are touchy with so many people using them between cleanings. A study showed grocery carts can have as much bacteria as some public bathrooms, so use the wipes that many stores now provide.

“Areas where there are a lot of hand contact. In the back of your mind say, maybe I want to pull out my hand sanitizer,” Dr. Bender said.